SOUTHBURY — Two people were hurt after a fire ripped through several condominiums and condemned a whole block at one of Connecticut’s oldest retirement communities.

Fire Marshal Barry Rickert said two women were treated and released Thursday from Waterbury Hospital.

The fire broke out at a Heritage Village condominium on Winship Drive, causing “extensive damage” to five units and forcing most residents to evacuate, Rickert said.

The units in that block were condemned because of structural damage, according to the fire marshal.

“Because of the layout of the building, they're all going to be affected,” he said.

Heritage Village, a 55-years-and-older community, has 2,580 units and its own 18-hole golf course. It was one of Connecticut’s first retirement communities.

Firefighters did not need to rescue any residents because all fire alarms were activated and people evacuated quickly, Rickert said.

Town and state officials are investigating the cause of the blaze while several organizations, including the American Red Cross, helped the displaced residents to relocate. Rickert said some of the people affected were moved to Heritage Inn, which is across the street.

Firefighters from Oxford, Roxbury, Newtown and Middlebury assisted Southbury in battling the blaze that broke out shortly before midnight Wednesday.

Part of the 1,000-acre village was built on the former estate of pianist/entertainer Victor Borge.

The first phase of the village was built in 1967 and it was completed in the early 1970s.